Attachment for rules.



No. 763,915- PATENTED JUNE 28, 1904.. A. S. LIDDLE.

ATTACHMENT FOR RULES.

APPLICATION FILED APR. 20, 1904. N0 MODEL.

winwl'oz A-S.biddle WWW v v v 6mm lar view, the rule being closed.

Patented June 28, 1904.

PATENT OFFICE.

ALFRED S. I IDDLE, OF CHANUTE, KANSAS.

ATTACHMENT FOR RULES.

SPECIFICATION forming part of Letters Patent No. 763,915, dated June 28,1904.

Application filed April 20, 190 i.

To all who/1'1, it may concern:

Be it known that I, ALFRED S. LIDDLE, a citizen of the United States,residing at Chanute, in the county of Neosho and State of Kansas, haveinvented certain new and useful Improvements in Attachments for Rules,of which the following is a specification.

This invention relates to improvements in braces for rigidly holding themembers of an ordinary folding carpenters rule at right angles to eachother to form a square.

The object of the invention is to provide 'a neat, cheap, and eifectiveholding device or brace for the purpose specified, and to this end Iconstruct the-brace of a single piece of spring metal and form atopposite ends a pivot and an engaging point, respectively.

Many other objects and advantages will be hereinafter referred to and beparticularly pointed out in the claim.

In the drawings, Figure 1 is a perspective view of my invention in use.Fig. 2 is a simi- Fig. 3 is an enlarged section on the line 3 3, Fig. 1,the brace being above its seat prior to the locking action between theparts. Fig. 4c is an enlarged detail sectional view showing the engagingpoint locked. Fig. 5 is a cross-sectional View on line 5 5, Fig. 4, butshowing a staple to form a seat for the catch. Fig. 6 isa detailperspective View of the preferred form of locking-bar.

The same numerals refer to like parts in all the figures.

1 and 2 represent two members of an ordinary folding carpenters rule,and 3 the hinge which connects the same. Two openings 4 and 5 are formedin the member 1, in which are fitted eyelets 6. These eyelets are forthe purpose of preventing wear between the parts,

- as will readily be understood.

Serial No. 204,092. (No model.)

the rule across one side of one of the eyeletopenings. To prevent thebrace projecting beyond the face of the rule, I may cut out the latter,as at 16 and 17, although this is not absolutely essential.

When it is desired to convert the rule into a square, the brace isturned on its pivot 9 to the position shown in Fig. 1 and its end 8 isforced into the eyelet 13. The brace being formed of spring metal it canreadily be raised, as shown in Fig. 3, to bring the end 8 intoengagement with the eye 13, then applying a little pressure the bent end8 is forced down and the projection 8 catches in its coacting seat andautomatically locks the brace. In disengaging the brace it is withdrawnfrom the eyelet 13 and turned to the position shown in Fig. 2, and theend 8 enters the eyelet 5, the latter being of the same construction asits corresponding eyelet 13.

From the foregoing description it is evident to one skilled in the artto which the invention appertains that I have produced a practical,neat, and durable device for converting a rule into a square. Thearrangement of parts is such that liabilty of Wear and loss of detailsis greatly reduced. By constructing the brace of one piece of springmetal enables me to dispense with the cost of separate parts as well asthe expense incident to assembling them.

What I claim as new is A rule composed of several members, a hingeconnecting the members, an opening formed in each member, one of saidopenings having a seat therein, a brace constructed of spring metalhaving at its ends respectively a pivot and a catch, a projection on thecatch, the pivot fitting in an opening of the rule member and beingheaded to hold it therein, the projection on the catch being forced intoits seat which serves to lock the brace in position across the joint ofthe square, substantially as described.

In testimony whereof I have signed my name,

ALFRED s. LIDDLE.

Witnesses:

THQS. H. ASI-IFORD, W. P. WRIGHT.

